Hydra has been successfully moved to the new data center and is operational.
Updates are described in detail at the HPC Wiki 2025 Data Center Move page.
Please take the time needed to read these pages before contacting us for support.
Hydra will remain powered up for use during the government shutdown.
The data center will have essential personnel remaining
through the shutdown to maintain the integrity of the IT infrastructure.
Access to Hydra will not be cut off, so users will be able to submit jobs
in the newly operational cluster.
Any major failure of the IT infrastructure (hardware or software) is unlikely
to be fixed during the shutdown, so accessibility to Hydra and its resources
cannot be guaranteed.
Support for Hydra will be limited to urgent matters
please contact SI-HPC-Admin@si.edu during the shutdown.
You can view the list of all the available modules:
as an HTML document, or
a plain ASCII text file.
You can also check the bandwidth between
SAO and HDC.
You can select to have this page refreshed every 5m,
20m, or
1hr, this one will auto-refresh every
20m.
Usage
Current snapshot sorted by nodes'
.
Usage vs time, for length=
and user=
highlighted.
As of Mon Oct 13 08:37:03 2025: #CPUs/nodes 5444/74, 0 down. Loads:
head node: 0.34, login nodes: 0.32, 0.18, 0.02, 0.00; NSDs: 0.01, 0.05, 0.33, 8.00, 8.07; licenses: none used.
Queues status: 40 disabled, none need attention, none in error state.
12 users with running jobs (slots/jobs):
Total number of queued jobs/tasks/slots: 18/18/288
55 users have/had running or queued jobs over the past 7 days, 88 over the past 15 days.
112 over the past 30 days.
Click on the tabs to view each section, on the plots to view larger versions.
You can view the current cluster snapshot sorted by name, no. cpu, usage, load
or memory, and
view the past load for 7, or 15, or 30 days as well as highlight a given user by
selecting the corresponding options in the drop down menus.
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This page was last updated on Monday, 13-Oct-2025 08:42:27 EDT
with mk-webpage.pl ver. 7.2/1 (Aug 2024/SGK) in 0:55.
Warnings
Oversubscribed Jobs
As of Mon Oct 13 08:37:03 EDT 2025 (0 oversubscribed job)
Inefficient Jobs
As of Mon Oct 13 08:37:03 EDT 2025 (9 inefficient jobs, showing no more than 3 per user)
Total running (PEs/jobs) = 407/28, 18 queued (jobs), showing only inefficient jobs (cpu% < 33% & age > 1h) for all users.
jobID name user age nPEs cpu% queue node taskID
10261684 hifiasm graujh +1:12 80 27.5% uTxlM.rq 93-05
10261906 spades_1 santossam +2:21 20 7.5% mThM.q 65-12
10263426 spades_1 santossam 18:05 20 8.8% mThM.q 75-03
10253677 Delphinidae_IQT mcgowenm +5:15 12 8.3% lThM.q 84-01
10259340 antismash lealc +3:23 12 26.0% lThM.q 65-20
10261999 demultiplex.job lealc +2:20 12 8.2% mThC.q 65-28
10263513 virsorter_job_0 scottjj 09:20 10 24.1% uTxlM.rq 76-01
10263523 gl_SOTEatlantic byerlyp 03:12 10 9.8% lThM.q 65-15
10262894 bears atkinsonga +2:15 1 0.2% lTWFM.sq 64-16
⇒ Equivalent to 143.2 underused CPUs: 177 CPUs used at 19.1% on average.
Nodes with Excess Load
As of Mon Oct 13 08:37:05 EDT 2025 (1 node has a high load, offset=1.5)
#slots excess
node #CPUs used load load
-----------------------------------
65-20 64 12 18.4 6.4 *Total excess load = 6.4
As of Mon Oct 13 08:37:04 EDT 2025
18 jobs waiting for jenkinskel (top 5):
jobID jobName user age nPEs memReqd queue taskID
--------- --------------- ---------------- ------ ---- -------- ------ -------
10261877 Full_Matrix_Bay jenkinskel +2:21 16 uThC.q
10261878 Full_Matrix_Bay jenkinskel +2:21 16 uThC.q
10261879 Full_Matrix_Bay jenkinskel +2:21 16 uThC.q
10261880 Full_Matrix_Bay jenkinskel +2:21 16 uThC.q
10261881 Full_Matrix_Bay jenkinskel +2:21 16 uThC.q
quota rule resource=value/limit %used
------------------- ------------------------------- ------
max_hC_slots_per_user/4 slots=136/143 95.1% for jenkinskel in queue uThC.q
max_slots_per_user/1 slots=136/840 16.2% for jenkinskel
max_mem_res_per_user/1 mem_res=16.00G/9.985T 0.2% for jenkinskel in queue uThC.q
------------------- ------------------------------- ------
Overall Quota Usage
quota rule resource=value/limit %used
------------------- ------------------------------- ------
total_mem_res/3 mem_res=2.051T/7.874T 26.0% for * in queue uTxlM.rq
blast2GO/1 slots=12/110 10.9% for *
total_slots/1 slots=415/5960 7.0% for *
total_mem_res/2 mem_res=1.715T/35.78T 4.8% for * in queue uThM.q
total_mem_res/1 mem_res=114.0G/39.94T 0.3% for * in queue uThC.q
Memory Usage
Reserved Memory, All High-Memory Queues
Select length:
Current Memory Quota Usage
As of Mon Oct 13 08:37:05 EDT 2025
quota rule resource=value/limit %used filter
---------------------------------------------------------------------------------------------------
total_mem_res/1 mem_res=114.0G/39.94T 0.3% for * in queue uThC.q
total_mem_res/2 mem_res=1.715T/35.78T 4.8% for * in queue uThM.q
total_mem_res/3 mem_res=2.051T/7.874T 26.0% for * in queue uTxlM.rq
Current Memory Usage by Compute Node, High Memory Nodes Only
Limit slots for all users together
users * to slots=5960
users * queues sThC.q,lThC.q,mThC.q,uThC.q to slots=5176
users * queues sThM.q,mThM.q,lThM.q,uThM.q to slots=4680
users * queues uTxlM.rq to slots=536
users * queues sTgpu.q,mTgpu.q,lTgpu.q to slots=104
Limit slots/user for all queues
users {*} to slots=840
Limit slots/user for hiMem queues
users {*} queues {sThM.q} to slots=840
users {*} queues {mThM.q} to slots=585
users {*} queues {lThM.q} to slots=390
users {*} queues {uThM.q} to slots=73
Limit slots/user for xlMem restricted queue
users {*} queues {uTxlM.rq} to slots=536
Limit total reserved memory for all users per queue type
users * queues sThC.q,mThC.q,lThC.q,uThC.q to mem_res=40902G
users * queues sThM.q,mThM.q,lThM.q,uThM.q to mem_res=36637G
users * queues uTxlM.rq to mem_res=8063G
Limit reserved memory per user for specific queues
users {*} queues sThC.q,mThC.q,lThC.q,uThC.q to mem_res=10225G
users {*} queues sThM.q,mThM.q,lThM.q,uThM.q to mem_res=9159G
users {*} queues uTxlM.rq to mem_res=8063G
Limit slots/user for interactive (qrsh) queues
users {*} queues {qrsh.iq} to slots=16
Limit GPUs for all users in GPU queues to the avail no of GPUs
users * queues {sTgpu.q,mTgpu.q,lTgpu.q,qgpu.iq} to GPUS=8
Limit GPUs per user in all the GPU queues
users {*} queues sTgpu.q,mTgpu.q,lTgpu.q,qgpu.iq to GPUS=4
Limit GPUs per user in each GPU queues
users {*} queues {sTgpu.q} to GPUS=4
users {*} queues {mTgpu.q} to GPUS=3
users {*} queues {lTgpu.q} to GPUS=2
users {*} queues {qgpu.iq} to GPUS=1
Limit to set aside a slot for blast2GO
users * queues !lTb2g.q hosts {@b2g-hosts} to slots=110
users * queues lTb2g.q hosts {@b2g-hosts} to slots=1
users {*} queues lTb2g.q hosts {@b2g-hosts} to slots=1
Limit total bigtmp concurrent request per user
users {*} to big_tmp=25
Limit total number of idl licenses per user
users {*} to idlrt_license=102
Limit slots for io queue per user
users {*} queues {lTIO.sq} to slots=8
Limit slots for io queue per user
users {*} queues {lTWFM.sq} to slots=2
Limit the number of concurrent jobs per user for some queues
users {*} queues {uTxlM.rq} to no_concurrent_jobs=3
users {*} queues {lTIO.sq} to no_concurrent_jobs=2
users {*} queues {lWFM.sq} to no_concurrent_jobs=1
users {*} queues {qrsh.iq} to no_concurrent_jobs=4
users {*} queues {qgpu.iq} to no_concurrent_jobs=1
Limit slots/user in hiCPU queues
users {*} queues {sThC.q} to slots=840
users {*} queues {mThC.q} to slots=840
users {*} queues {lThC.q} to slots=431
users {*} queues {uThC.q} to slots=143
You can view plots of disk use vs time, for the past 7, 30, or 120 days;
as well as
plots of disk usage by user, or
by device (for the past 90 or 240 days respectively).
Notes
Capacity shows % disk space full and % of inodes used.
When too many small files are written on a disk, the file system can become full because it is
unable to keep track of new files.
The % of inodes should be lower or comparable to the % of disk space used.
If it is much larger, the disk can become unusable before it gets full.